Ramp Function Generator; Value Range Of The Output Signal; Evaluation Of The Output Signal; Deactivation Of The Process Controller - Lenze 9300 System Manual

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Function library
7.5.68.2

Ramp function generator

The setpoint PCTRL-SET is led by a ramp generator with linear characteristic.Thus, setpoint
step-changes at the input can be transformed into a ramp.
Fig. 7-199 Acceleration and deceleration times of the ramp generator
•
The ramps can be adjusted separately for acceleration and deceleration.
– Acceleration time t
– Deceleration time t
•
PCTRL-INACT = HIGH
– The ramp generator is immediately set to zero.
7.5.68.3

Value range of the output signal

•
The process controller operates bipolar in the default setting.
– The output value is limited to ±100 % .
•
The function can be set unipolar under C0337.
– The output value is limited to 0 ... +100 % .
7.5.68.4

Evaluation of the output signal

•
The output signal can be evaluated after the limitation block via PCTRL-INFLU.
– The process controller can be used or suppressed with this evaluation.
– The calcuation is done according to the following formula:
100 % (PCTRL-OUT) = 100 % * 100 % (PCTRL-INFLU).
7.5.68.5

Deactivation of the process controller

•
PCTRL-INACT = HIGH deactivates the process controller
– PCTRL-OUT is set to zero.
– The I-component is set to zero.
– The ramp generator is set to zero.
7-248
[%]
RFG-OUT
100%
w2
w1
0
t ir
T ir
100%
= t
T
ir ir w2 − w1
with C0332.
ir
with C0333.
if
EDSVS9332P-D21 EN 3.0
t if
T if
100%
= t
T
if if w2 − w1
t
L